Conveyer.



PATENTED MAY 24, 1904.

W. J. PATTERSON.

GONVEYER.

APPLIOATION FILED rm. 5, 1903.

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PATENTED MAY 24, 1904.

W. J. PATTERSON.

GONVEYER. APPLIOATIQN FILED FEB. 5. 1903.

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PATENTED MAY 24, 1904.

W. J. PATTERSON.

UUNVEYER.

APPLICATION FILED FEB. 5. 1903.

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UNITED STATES Patented May 24;, 1904.

PATENT OFFICE.

I/VILLIAM J. PATTERSON, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO l-IEYLAND PATTERSON, OF PITTSBURG, PENNSYLVANIA, A OOPARTNER- SHIP OFPENNSYLVANIA.

CONVEYER.

SPECIFICATION forming part of Letters Patent N0. 760,479, dated May 24,1904. Application filed February 5, 1908. Serial No. 141,958. (Nomodel.)

To all whom it may concern:

Be it known that I, WILLIAM J. PATTERSON, a resident of Pittsburg, inthe county of Allegheny and State of Pennsylvania, have invented a newand usefulImprovement in Oonveyers; and I do hereby declare thefollowing to be a full, clear, and exact description thereof.

My invention relates to elevating and conveying apparatus; and itsobject is to provide mechanism for this purpose whereby material can beremoved from a storage place of extended area.

In my application filed June 9, 1902, Serial No. 110,795, I have shown,described, and

5 claimed elevating and conveying mechanism comprising,generally stated,a movable bridge or crane having a transverse conveyer thereon, togetherwith a carriage or trolley moving on said bridge and carrying anextensible 2O elevator-leg which will elevate the material and depositit in the conveyor on the bridge.

The present application has for its object to cover an improvement uponthe mechanism shown and described in said application above 5 referredto, the essential feature of which improvement consists in so arrangingthe carriage on the bridge and the endless eonveyer of the elevator asto greatly shorten the carriage, thus enabling the use with a storage- 3space of a given area of a bridge or crane of less length than isnecessary with old forms of apparatus.

Theimprovement, generally stated, consists in a suspended elevator-legcomprising telescoping members and having therein an endless conveyer,together with mechanism operatively connected to the lower telescopingmember for raising and lowering the same, the arrangement being suchthat the loop of 4 the endless conveyer extends horizontally, as

in the old apparatus.

The invention also comprises certain details in the arrangement of theparts and the mechanism for actuating the same, which will behereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side view, partly brokenaway, of my improved hoisting and conveying apparatus.

or to a suitable car.

Fig. 2 is a side view, on an enlarged scale, of

a portion thereof. Fig. 3 is a plan view of 5 the carriage carrying theelevator-leg; and Fig. 4 is a horizontal section on the line 4: 4, Fig.2.

In my improved apparatus I employ a suitable bridge or crane 1,extending across the storage area, said bridge or crane being suitablymounted so that it can be propelled back and forth along said storagearea-as, for instance, by being provided with wheels 2, running ontracks 3. On this bridge or crane is a suitable transverse conveyor 4E,that shown in the drawings comprising an endless belt, although anyother form of conveyor might be used. This transverse conveyor will bedriven in any suitable manner, preferably 5 from a motor mounted on thebridge, and will convey the material to one end of the bridge anddeposit the same in a hopper 6, from which it is conveyed by suitablespouts or chutes to another conveyor, by which it is carried away, 7

All of these parts, however, are or may be of the construction shown inmy prior application or of any other suitable or desired construction.

Mounted on the bridge or crane 1 so as to move along the same ortransversely of the storage area is a carriage or trolley 10, providedwith suitable wheels 11, running on tracks on the bridge, and whichtrolley may be propelled along the same by any suitable mechanism. Ihave shown for this purpose an electric motor 12, mounted on thecarriage and connected, by means of suitable intermediate gearing, withthe axles 13 of two pairs of the wheels of the carriage. Thisintermediate 5 gearing may be of any suitable construction, and detaileddescription of that shown is not given; but it will be readilyunderstood that by means of the motor 12 the carriage is propelled alongthe bridge or crane 1. 9

Mounted on the carriage 10 is a hopper 15, havingaspout 16 leading tothe transverse eonveyer 4 on the bridge. Also mounted in said carriageare several pairs of guide-wheels for the endless elevator hereinafterdescribed, five pairs of such guide-wheels being shown and numbered 17,18, 19, 20, and 21. One or more of these guide-wheels are driven by anysuitable mechanism so as to impart movement to the endless conveyer ofthe elevator. I have shown the guide-wheels 17 driven from an electricmotor 23, mounted on the carriage and connected by a belt 2& to a pulley25, which is connected to the wheel 17 by a train of intermediategearing. Any other mechanism, however, for positively driving one ormore sets of the guide-wheels may be employed. The guide-wheels showneach comprise two disks or sprockets spaced apart on a single shaft,this being necessary byreason of the particular type of endless conveyershownnamely, one comprising two chains 26, carrying between them'buckets27. These guidewheels, however, will be changed in character accordingto the kind of endless conveyer employed.

Depending from the carriage 10 is a frame or casing 30, which isprovided with vertical shafts or openings 32 and 33. The shaft 32 formsthe upper member of a telescoping elevator-leg, the lower member 35 ofwhich we tends upwardly into said shaft 32 and is adapted to telescopetherein. This lower member comprises a rigid beam-like structurepractically of the width of the shaft 32 and is guided in ways formed byguiding-angles 35, secured to the shaft or casing 32. This telescopingmember carries at its lower end a set of guidewheels 36, around whichthe endless conveyer 26 passes. The buckets 27 of the conveyer areguided in the shaft 32 by means of flanges or angles 37, secured to thewalls of said shaft. In order to lengthen or shorten this telescopingelevator, the lower member thereof has formed on or secured to its sidesthe rack-bars 39, which are engaged by gears 40, mounted on thedepending frame or casing 30 near its lower end and driven by anysuitable mechanismsuch, for instance, as from an electric motor 11,mounted on a platform 42, secured to the lower end of the frame orcasing 30 and connected to the gears 40 by means of suitableintermediate gearing, such as shown in Fig. 4 of the drawings. Thisgearing may be varied within wide limits, and consequently detaileddescription thereof is not given.

The shaft 33 is provided with a pair of oppositely-arrangedguide-grooves 4:5, in which move the ends of the shaft of a pair ofguidewheels 46, around which the endless conveyer 26 passes. Theseguide-wheels are entirely free to move up and down in the shaft 33,being guided by the grooves 45 and being limited in their positionentirely by the endless conveyer 26, in the loop of which they aresuspended.

The endless conveyer 26, it will be observed, has one loop passingdownwardly in the telescoping elevator-leg and around the guidewheels 36at the lower end thereof. The upwardly-traveling reach of said conveyerpasses over the driven guide-wheels 17 on the carriage 10, wherebymotion is communicated to the conveyor in order to lift the material.After passing over the wheels 17 the conveyer passes under theguide-wheels 18, thus inclining the buckets 27, so as to deposit thecontents into the hopper 15. Thence the conveyer passes upwardly aroundthe guide-wheels 19 and 20, thence downwardly into the shaft 33, andthence upwardly again over the guidewheels 21, thus forming a loop whichhangs down in the shaft 33. This loop passes around and is guided by thewheels 46, which ride up and down in said shaft as the loop is shortenedand lengthened. The length of this depending loop depends upon theextent to which the lower telescoping member 35 of the elevatorleg islowered, ,this loop being merely provided in order to take up the slackof the endless conveyer when said telescoping member is raised.

The operation of the mechanism will be readily understood from theforegoing description. It will be observed that the bridge or crane 1travels longitudinally over the storage area, while the carriage 10travels transversely of said area on the bridge 1, and the telescopingelevator-leg shown enables the apparatus to reach material at variousheights on said storage area. In this way all portions of the storagearea can be reached. By having the loop of the endless conveyerextending downwardly at the side of the elevatorleg the carriage 10 canbe made comparatively short, so that for a given width of storage areathe bridge 1 can be made shorter than it otherwise could be.

hat I claim as my invention, and desire-to secure by Letters Patent, is-

1. In hoisting apparatus, the combination with a frame, of anelevator-leg suspended therefrom and comprising telescoping members, anendless conveyer extending downwardly into said elevator and having adownwardly-hanging loop, and mechanism operatively connected to thelower member of the telescoping leg for raising and lowering the same.

2. In hoisting apparatus, the combination with a frame, of anelevator-leg suspended therefrom and comprising telescoping members, anendless conveyer passing over a guidewheel in the lower end of said leg,over stationary guide-wheels in the frame and having adownwardly-hanging loop, means for guiding said loop, and mechanismoperatively connected to the lower member of the telescoping leg forraising and lowering the same.

3. In hoisting apparatus, the combination with a frame, of anelevator-leg suspended therefrom and comprising telescoping members, anendless conveyer passing over a guidewheel in the lower end of said leg,over guidewheels in the frame and having a downwardlyhanging loop, ashaft into which said loop extends, guide-wheels suspended in said loopITO new

and guided in said shaft, and mechanism for causing the extension andcontraction of the telescoping members.

i. In hoisting apparatus, the combination with a frame, of anelevator-leg suspended therefrom and comprising telescoping memhere, anendless conveyer passing over suitable guide-wheels in the lower end ofsaid leg and in the frame and having a loop for taking up the slack, andmechanism connected to the lower member of the telescoping leg forraising and lowering the same.

5. In hoisting apparatus, the combination with a frame, of anelevator-leg suspended therefrom and comprising telescoping members, anendless eonveyer passing over suitable guide-wheels in the lower end ofsaid leg and in the frame and provided with a loop for taking up theslack, a rack or racks on the lower telescoping member, and apowerdriven pinion or pinions engaging the same for elevating andlowering said member.

6. In hoisting apparatus, the combination with a frame provided with adepending portion provided with a platform, a shaft formed in saiddepending portion, a telescoping memher in said shaft, a suitableconveyer passing through said shaft and over said telescoping member, amotor on said platform, and connections between said motor and thetelescoping member for raising and lowering the same.

7. In hoisting apparatus, the combination with a suitable bridge, of acarriage movable thereon, an elevator-leg suspended therefrom andcomprising telescoping members, an endless conveyer passing over aguide-wheel in the lower end of said leg over guide-wheels in thecarriage and having a downwardlyhanging loop, and mechanism for causingthe extension and contraction of the telescoping members.

8. In hoisting apparatus, the combination with a bridge, of a carriagemovable along the same, a depending frame-secured to said carriage, anelevator-leg formed in part by a shaft in said depending frame and inpart by a telescoping member in said shaft, an endless conveyer passingthrough said shaft and over said telescoping member, a rack formed onsaid telescoping member, and a powerdriven gear mounted on the lower endof said depending frame and engaging said rack.

In testimony whereof I, the said WILLIAM J. PATTERSON, have hereunto setmy hand.

WILLIAM J. PATTERSON.

WVitnesses:

ROBER C. TOTTEN, FRED 1). SWEET.

